private proxies with ip restriction instead of user/pass?

Was wondering if anyone could point me in the direction of a good proxy provider that can do restrictions based on an IP instead of with a username/password. I'm using an older app thats still very good but doesn't support private proxies very well.

If you are still looking
i found a really good one for posting or account creation or even craigslist, it really depends what you are using it for
the coolest thing for me it was separated into country,state,city etc. cant post url
send me you contact if you need this

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